Quinoxaline Compounds and Derivatives

ABSTRACT

The present invention provides oxazine compounds, method of using and method of making oxazine compounds and its pharmaceutical use.

CROSS-REFERENCE TO RELATED APPLICATIONS

This patent application is a non-provisional patent application of U.S. provisional patent application 61/467,323 filed on Mar. 24, 2011 and entitled “Quinoxaline Compounds and Derivatives”, and U.S. provisional patent application 61/467,335 filed on Mar. 24, 2011 and entitled “Aromatic Neuroprotecting Compounds and Derivatives Thereof” the content of each of which is hereby incorporated by reference in its entirety.

STATEMENT OF FEDERALLY FUNDED RESEARCH

Not Applicable.

SEQUENCE LISTING

Not Applicable.

INCORPORATION-BY-REFERENCE OF MATERIALS FILED ON COMPACT DISC

Not Applicable.

TECHNICAL FIELD OF THE INVENTION

The present invention relates in general to the field of pharmaceutical compositions and synthesis, and more particularly, to novel compositions and methods for preparing the compound and its pharmaceutical use.

BACKGROUND OF THE INVENTION

U.S. Patent Application Publication No. 2009/0286797, entitled, Novel Quinoxaline Derivatives and Their Medical Use discloses novel quinoxaline derivatives having medical utility, to use of the quinoxaline derivatives of the invention for the manufacture of a medicament, to pharmaceutical compositions comprising the quinoxaline derivatives of the invention, and to methods of treating a disorder, disease or a condition of a subject, which disorder, disease or condition is responsive to positive modulation of AMPA receptor mediated synaptic responses.

U.S. Pat. No. 3,759,912, entitled, Quinoxalines discloses a Quinoxaline useful as broad spectrum antimicrobials in human and veterinary medicine; novel intermediates useful in their preparation; processes for their production from the appropriate quinoxaline, N-monoxide quinoxaline, quinoxaline carboxylic acid or furazan oxide are disclosed.

BRIEF SUMMARY OF THE INVENTION

The present invention provides a compound of formula or pharmaceutical salts thereof:

wherein A and B are selected from C, N, S, O. R₁-R₇ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester, group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group. R₈ is a C₁-C₆ Alkyl group, a C₁-C₆ alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an ether group, an ester group, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group. R₉-R₁₃ are independently selected from a H, a C₁-C₆ Alkyl; a C₁-C₆ Alkenyl, a halo, a substituted C₁-C₆ alkyl, a substituted C₁-C₆ alkenyl, a carbonyl, a carbonate ester, an acetoxy group, a an acetyl group, an ether, an ester, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group.

The present invention provides a compound of formula or pharmaceutical salts thereof:

wherein R₁-R₁₃ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group.

A compound of formula or pharmaceutical salts thereof:

wherein R₁-R₆ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group. R₇—R₁₆ are independently selected from a H, a C₁-C₆ Alkyl; a C₁-C₆ Alkenyl, a halo, a substituted C₁-C₆ alkyl, a substituted C₁-C₆ alkenyl, a carbonyl, a carbonate ester, an acetoxy group, a an acetyl group, an ether, an ester, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group.

A compound of formula or pharmaceutical salts thereof:

wherein R₁-R₁₁ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group.

A compound of formula or pharmaceutical salts thereof:

wherein A, A′, B and B′ are selected from C, N, S, O. R₂-R₁₀ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group.

DETAILED DESCRIPTION OF THE INVENTION

While the making and using of various embodiments of the present invention are discussed in detail below, it should be appreciated that the present invention provides many applicable inventive concepts that can be embodied in a wide variety of specific contexts. The specific embodiments discussed herein are merely illustrative of specific ways to make and use the invention and do not delimit the scope of the invention.

To facilitate the understanding of this invention, a number of terms are defined below. Terms defined herein have meanings as commonly understood by a person of ordinary skill in the areas relevant to the present invention. Terms such as “a”, “an” and “the” are not intended to refer to only a singular entity, but include the general class of which a specific example may be used for illustration. The terminology herein is used to describe specific embodiments of the invention, but their usage does not delimit the invention, except as outlined in the claims.

The term “alkyl”, “alkenyl”, “alkynyl” and “alkylene” denotes hydrocarbon chains typically ranging from about 1 to about 12 carbon atoms in length, preferably 1 to about 6 atoms, and includes straight and branched chains. Unless otherwise noted, the preferred embodiment of any alkyl or alkylene referred to herein is C1-C6 alkyl (e.g., methyl or ethyl).

The term “cycloalkyl” denotes a saturated or unsaturated cyclic hydrocarbon chain, including bridged, fused, or Spiro cyclic compounds, preferably comprising 3 to about 12 carbon atoms, more preferably 3 to about 8.

The term “aryl” denotes one or more aromatic rings, each of 5 or 6 core carbon atoms. Multiple aryl rings may be fused, as in naphthyl or unfused, as in biphenyl. Aryl rings may also be fused or unfused with one or more cyclic hydrocarbon, heteroaryl, or heterocyclic rings.

The term “heteroaryl” denotes an aryl group containing from one to four heteroatoms, preferably N, O, or S, or a combination thereof, which heteroaryl group is optionally substituted at carbon or nitrogen atom(s) with C1-C6 alkyl, —CF3, phenyl, benzyl, or thienyl, or a carbon atom in the heteroaryl group together with an oxygen atom form a carbonyl group, or which heteroaryl group is optionally fused with a phenyl ring. Heteroaryl rings may also be fused with one or more cyclic hydrocarbon, heterocyclic, aryl, or heteroaryl rings. Heteroaryl includes, but is not limited to, 5-membered heteroaryls having one hetero atom (e.g., thiophenes, pyrroles, furans); 5-membered heteroaryls having two heteroatoms in 1, 2 or 1,3 positions (e.g., oxazoles, pyrazoles, imidazoles, thiazoles, purines); 5-membered heteroaryls having three heteroatoms (e.g., triazoles, thiadiazoles); 5-membered heteroaryls having 3 heteroatoms; 6-membered heteroaryls with one heteroatom (e.g., pyridine, quinoline, isoquinoline, phenanthrine, 5,6-cycloheptenopyridine); 6-membered heteroaryls with two heteroatoms (e.g., pyridazines, cinnolines, phthalazines, pyrazines, pyrimidines, quinazolines); 6-membered heteroaryls with three heteroatoms (e.g., 1,3,5-triazine); and 6-membered heteroaryls with four heteroatoms.

The term “heterocycle” or “heterocyclic” denotes one or more rings of 5-12 atoms, preferably 5-7 atoms, with or without unsaturation or aromatic character and at least one ring atom which is not carbon. Preferred heteroatoms include sulfur, oxygen, and nitrogen. Multiple rings may be fused.

The term “heteroatom” denotes any non-carbon atom in a hydrocarbon analog compound. Examples include oxygen, sulfur, nitrogen, phosphorus, arsenic, silicon, selenium, tellurium, tin, and boron.

The term “alkylene” denotes a divalent alkyl group as defined above, such as methylene (—CH₂—), propylene (—CH₂CH₂CH₂—), chloroethylene (—CHClCH₂—), 2-thiobutene —CH₂CH(SH)CH₂CH₂, 1-bromo-3-hydroxyl-4-methylpentene (—CHBrCH₂CH(OH)CH(CH₃)CH₂—), and the like.

The term “alkenyl” denotes branched or unbranched hydrocarbon chains containing one or more carbon-carbon double bonds.

The term “alkynyl” denotes branched or unbranched hydrocarbon chains containing one or more carbon-carbon triple bonds.

The term “aryl” denotes a chain of carbon atoms which form at least one aromatic ring having preferably between about 6-14 carbon atoms, such as phenyl, naphthyl, and the like, and which may be substituted with one or more functional groups which are attached commonly to such chains, such as hydroxyl, bromo, fluoro, chloro, iodo, mercapto or thio, cyano, cyanoamido, alkylthio, heterocycle, aryl, heteroaryl, carboxyl, carbalkoyl, alkyl, alkenyl, nitro, amino, alkoxyl, amido, and the like to form aryl groups such as biphenyl, iodobiphenyl, methoxybiphenyl, anthryl, bromophenyl, iodophenyl, chlorophenyl, hydroxyphenyl, methoxyphenyl, formylphenyl, acetylphenyl, trifluoromethylthiophenyl, trifluoromethoxyphenyl, alkylthiophenyl, trialkylammoniumphenyl, amidophenyl, thiazolylphenyl, oxazolylphenyl, imidazolylphenyl, imidazolylmethylphenyl, and the like.

The term “alkoxy” denotes —OR—, wherein R is alkyl.

The term “amido” denotes an amide linkage: —C(O)NHR (wherein R is hydrogen or alkyl).

The term “amino” denotes an amine linkage: —NR—, wherein R is hydrogen or alkyl. The term “carboxyl” denotes —C(O)O—, and the term “carbonyl” denotes —C(O)—.

The term “alkylcarboxyl” denote an alkyl group as defined above substituted with a C(O)O group, for example, CH₃C(O)O—, CH₃CH₂C(O)O—, etc.

The term “carbocycle” denotes cyclic hydrocarbon chain having about 5 to about 8 ring carbons such as cyclopentyl, cylcohexyl, etc. These groups can be optionally substituted with one or more functional groups as defined under “alkyl” above.

The term “halogen” includes chlorine, fluorine, bromine, iodine and mixtures thereof.

The term “heterocycle” denotes straight chain or ring system that may contain from zero to four heteroatoms selected from N, O, and S, wherein the nitrogen and sulfur atoms are optionally oxidized, and the nitrogen atom(s) are optionally quaternized.

The term “carbamoyl” denotes the group —C(O)NH₂.

The term “hydroxyalkyl” denotes an alkyl group as defined above which is substituted by a hydroxy group.

The term “alkylcarboxyl”, alone or in combination, means an acyl group derived from an alkanecarboxylic acid, i.e. alkyl-C(O)—, such as acetyl, propionyl, butyryl, valeryl, 4-methylvaleryl etc.

The present invention provides compound of the general formula:

wherein a, b, and c are selected from C, N, S, O. R₁-R₇ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group. R₈ is a C₁-C₆ Alkyl group, a C₁-C₆ alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an ether group, an ester group, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group. R₉-R₁₃ are independently selected from a H, a C₁-C₆ Alkyl; a C₁-C₆ Alkenyl, a halo, a substituted C₁-C₆ alkyl, a substituted C₁-C₆ alkenyl, a carbonyl, a carbonate ester, an acetoxy group, a an acetyl group, an ether, an ester, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group.

The present invention provides compound of the general formula:

wherein R₂-R₆ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group. R₈ is a C₁-C₆ Alkyl group, a C₁-C₆ alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an ether group, an ester group, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group. R₉-R₁₃ are independently selected from a H, a C₁-C₆ Alkyl; a C₁-C₆ Alkenyl, a halo, a substituted C₁-C₆ alkyl, a substituted C₁-C₆ alkenyl, a carbonyl, a carbonate ester, an acetoxy group, a an acetyl group, an ether, an ester, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group. For example,

The present invention provides compound of the general formula:

wherein R₂-R₆ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group. R₈ is a C₁-C₆ Alkyl group, a C₁-C₆ alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an ether group, an ester group, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group. R₉-R₁₆ are independently selected from a H, a C₁-C₆ Alkyl; a C₁-C₆ Alkenyl, a halo, a substituted C₁-C₆ alkyl, a substituted C₁-C₆ alkenyl, a carbonyl, a carbonate ester, an acetoxy group, a an acetyl group, an ether, an ester, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group. For example,

The present invention provides compound of the general formula:

wherein R₂-R₁₁ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group. For example,

The present invention provides compound of the general formula:

wherein A, A′, B and B′ are selected from C, N, S, O. R₂-R₁₀ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group. For example:

The present invention provides (Z)-6,7-dimethyl-3-(2-oxo-2-phenylethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-7-chloro-3-(2-oxo-2-phenylethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-7-fluoro-3-(2-oxo-2-phenylethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-(2-(4-methoxyphenyl)-2-oxoethylidene)-6,7-dimethyl-3,4-dihydroquinoxalin-2(1H)-one; (Z)-6,7-dichloro-3-(2-(4-methoxyphenyl)-2-oxoethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-7-chloro-3-(2-(4-methoxyphenyl)-2-oxoethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-7-fluoro-3-(2-(4-methoxyphenyl)-2-oxoethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-oxo-2-(2-oxo-2-phenylethylidene)-1,2,3,4-tetrahydroquinoxaline-6-carbonitrile; (Z)-7-bromo-3-(2-(4-methoxyphenyl)-2-oxoethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-oxo-2-(2-oxo-2-phenylethylidene)-1,2,3,4-tetrahydroquinoxaline-6-carbonitrile; (Z)-7-bromo-3-(2-(4-methoxyphenyl)-2-oxoethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-5-hydroxy-3-(2-oxo-2-phenylethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-5-hydroxy-3-(2-(4-methoxyphenyl)-2-oxoethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-methyl3-oxo-2-(2-oxo-2-phenylethylidene)-1,2,3,4-tetrahydroquinoxaline-6-carboxylate; (Z)-methyl2-(2-(4-methoxyphenyl)-2-oxoethylidene)-3-oxo-1,2,3,4-tetrahydroquinoxaline-6-carboxylate; (Z)-methyl3-oxo-2-(2-oxo-2-(4-(trifluoromethyl)phenyl)ethylidene)-1,2,3,4-tetrahydroquinoxaline-6-carboxylate; (Z)-3-(2-(4-(benzyloxy)phenyl)-2-oxoethylidene)-7-bromo-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-(2-(4-methoxyphenyl)-2-oxoethylidene)-7-methyl-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-(2-(3,5-dibromo-4-hydroxyphenyl)-2-oxoethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-(2-(3,5-dibromo-4-hydroxyphenyl)-2-oxoethylidene)-7-nitro-3,4-dihydroquinoxalin-2(1H)-one; (Z)-6,8-dibromo-3-(2-(3,5-dibromo-4-hydroxyphenyl)-2-oxoethylidene)-7-hydroxy-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-(2-(3,5-dibromo-4-hydroxyphenyl)-2-oxoethylidene)-5-hydroxy-3,4-dihydroquinoxalin-2(1H)-one; (Z)-7-bromo-3-(2-(3,5-dibromo-A-hydroxyphenyl)-2-oxoethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-(3,5-dibromo-4-hydroxybenzylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-(3,5-dibromo-4-hydroxybenzylidene)-7-methoxy-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-(3,5-dibromo-4-hydroxybenzylidene)-6,7-dimethyl-3,4-dihydroquinoxalin-2(1H)-one; (Z)-6,7-dichloro-3-(3,5-dibromo-4-hydroxybenzylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-7-chloro-3-(3,5-dibromo-4-hydroxybenzylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-(3,5-dibromo-4-hydroxybenzylidene)-7-fluoro-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-((1H-pyrrol-2-yl)methylene)-6,7-dimethyl-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-(3,5-dibromobenzyl idene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-6-chloro-3-(3,5-dibromobenzylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-((1H-pyrrol-2-yl)methylene)-6-chloro-3,4-dihydroquinoxalin-2(1H)-one; (Z)-6-chloro-3-(furan-2-ylmethylene)-3,4-dihydroquinoxalin-2(1H)-one; and (Z)-7-bromo-3-(furan-2-ylmethylene)-3,4-dihydroquinoxalin-2(1H)-one.

The present invention provides compound of the general formula:

wherein A, A′, B, B′ and C are selected from C, N, S, O. R₁-R₇ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group. R₈ is a C₁-C₆ Alkyl group, a C₁-C₆ alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an ether group, an ester group, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group. R₉-R₁₃ are independently selected from a H, a C₁-C₆ Alkyl; a C₁-C₆ Alkenyl, a halo, a substituted C₁-C₆ alkyl, a substituted C₁-C₆ alkenyl, a carbonyl, a carbonate ester, an acetoxy group, a an acetyl group, an ether, an ester, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group.

The present invention provides compound of the general formula:

wherein A′, and B′ are selected from C, N, S, O. R₂-R₆ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group. R₈ is a C₁-C₆ Alkyl group, a C₁-C₆ alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an ether group, an ester group, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group. R₉-R₁₃ are independently selected from a H, a C₁-C₆ Alkyl; a C₁-C₆ Alkenyl, a halo, a substituted C₁-C₆ alkyl, a substituted C₁-C₆ alkenyl, a carbonyl, a carbonate ester, an acetoxy group, a an acetyl group, an ether, an ester, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group.

The present invention provides compound of the general formula:

wherein A′, and B′ are selected from C, N, S, O. R₂-R₄ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group. R₈ is a C₁-C₆ Alkyl group, a C₁-C₆ alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an ether group, an ester group, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group. R₉-R₁₃ are independently selected from a H, a C₁-C₆ Alkyl; a C₁-C₆ Alkenyl, a halo, a substituted C₁-C₆ alkyl, a substituted C₁-C₆ alkenyl, a carbonyl, a carbonate ester, an acetoxy group, a an acetyl group, an ether, an ester, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group.

For example,

The present invention provides compound of the general formula:

wherein R₂-R₄ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group. R₈ is a C₁-C₆ Alkyl group, a C₁-C₆ alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an ether group, an ester group, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group. R₉-R₁₂ are independently selected from a H, a C₁-C₆ Alkyl; a C₁-C₆ Alkenyl, a halo, a substituted C₁-C₆ alkyl, a substituted C₁-C₆ alkenyl, a carbonyl, a carbonate ester, an acetoxy group, an acetyl group, an ether, an ester, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group. For example,

Dihydroquinoxalin derivative compounds or pharmaceutical salts thereof:

and more specifically

wherein R₁-R₈ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group. For example:

IC₅₀ Code structure Value SK-C-7

2.51 SK-C-11

4.3

A compound of formula or pharmaceutical salts thereof:

wherein A and B are individually a C, O, N or S and R1 is an alkyl or an alkenyl and R2 is a phenyl, benzyloxyl, pyridyl, indolone, pyrrol, carbamoyl, pyridine, substituted phenyl, substituted benzyloxyl, substituted pyridine, or substituted pyridyl and R3 is a hydrogen, a halogen, an amino, an alkyl or an alkenyl.

A compound of formula or pharmaceutical salts thereof:

wherein A and B are individually a C, O, N or S and R₁-R₁₀ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group. For example,

A compound of formula or pharmaceutical salts thereof:

wherein A and B are individually a C, O, N or S and R₁-R₈ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group. For example:

A compound of formula or pharmaceutical salts thereof:

wherein A and B are individually a C, O, N or S and R₁-R₈ are independently selected from a H, a C₁-C₆ Alkyl group, a C₃-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group. For example:

A compound of formula or pharmaceutical salts thereof:

wherein A and B are individually a C, O, N or S and R₁-R₈ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group. For example:

A compound of formula or pharmaceutical salts thereof:

wherein A and B are individually a C, O, N or S and R₁-R₈ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group. For example:

Hydrazono-indolin-2-one derivative compounds or pharmaceutical salts thereof:

wherein R₁-R₈ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group. For example:

Code structure IC₅₀ Value SK-HIBS-1

2.70 SK-MH—Cl—Br—OH

1.67 SK-MH—Cl-diCl—OH

3.3 SK-MH-Cl—CN

1.56348 SK-MH-diBr

0.182779

Pyrimidine derivative compounds or pharmaceutical salts thereof:

wherein R₁-R₃ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group. For example:

Code structure IC₅₀ Value SK-Barbi-diBr

0.741839 SK-Barbi-DiCl

0.310457

It is contemplated that any embodiment discussed in this specification can be implemented with respect to any method, kit, reagent, or composition of the invention, and vice versa. Furthermore, compositions of the invention can be used to achieve methods of the invention.

It will be understood that particular embodiments described herein are shown by way of illustration and not as limitations of the invention. The principal features of this invention can be employed in various embodiments without departing from the scope of the invention. Those skilled in the art will recognize, or be able to ascertain using no more than routine experimentation, numerous equivalents to the specific procedures described herein. Such equivalents are considered to be within the scope of this invention and are covered by the claims.

All publications and patent applications mentioned in the specification are indicative of the level of skill of those skilled in the art to which this invention pertains. All publications and patent applications are herein incorporated by reference to the same extent as if each individual publication or patent application was specifically and individually indicated to be incorporated by reference.

The use of the word “a” or “an” when used in conjunction with the term “comprising” in the claims and/or the specification may mean “one,” but it is also consistent with the meaning of “one or more,” “at least one,” and “one or more than one.” The use of the term “or” in the claims is used to mean “and/or” unless explicitly indicated to refer to alternatives only or the alternatives are mutually exclusive, although the disclosure supports a definition that refers to only alternatives and “and/or.” Throughout this application, the term “about” is used to indicate that a value includes the inherent variation of error for the device, the method being employed to determine the value, or the variation that exists among the study subjects.

As used in this specification and claim(s), the words “comprising” (and any form of comprising, such as “comprise” and “comprises”), “having” (and any form of having, such as “have” and “has”), “including” (and any form of including, such as “includes” and “include”) or “containing” (and any form of containing, such as “contains” and “contain”) are inclusive or open-ended and do not exclude additional, unrecited elements or method steps.

The term “or combinations thereof” as used herein refers to all permutations and combinations of the listed items preceding the term. For example, “A, B, C, or combinations thereof” is intended to include at least one of: A, B, C, AB, AC, BC, or ABC, and if order is important in a particular context, also BA, CA, CB, CBA, BCA, ACB, BAC, or CAB. Continuing with this example, expressly included are combinations that contain repeats of one or more item or term, such as BB, AAA, MB, BBC, AAABCCCC, CBBAAA, CABABB, and so forth. The skilled artisan will understand that typically there is no limit on the number of items or terms in any combination, unless otherwise apparent from the context.

All of the compositions and/or methods disclosed and claimed herein can be made and executed without undue experimentation in light of the present disclosure. While the compositions and methods of this invention have been described in terms of preferred embodiments, it will be apparent to those of skill in the art that variations may be applied to the compositions and/or methods and in the steps or in the sequence of steps of the method described herein without departing from the concept, spirit and scope of the invention. All such similar substitutes and modifications apparent to those skilled in the art are deemed to be within the spirit, scope and concept of the invention as defined by the appended claims. 

1. A compound of formula or pharmaceutical salts thereof:

wherein R₁-R₆ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group.
 2. The composition of claim 1, wherein R₁ is a H, R₂ is a CH₃, R₃ is a CH₃, R₄ is a H, R₅ is a H, and R₆ is a H; wherein R1 is a H, R₂ is a H, R₃ is a C₁, R₄ is a H, R₅ is a H, and R₆ is a H; wherein R₁ is a H, R₂ is a H, R₃ is a F, R₄ is a H, R₅ is a H, and R₆ is a H; wherein R₁ is a H, R₂ is a CH₃, R₃ is a CH₃, R₄ is a H, R₅ is a H, and R₆ is a OCH₃; wherein R₁ is a H, R₂ is a C₁, R₃ is a C₁, R₄ is a H, R₅ is a H, and R₆ is a OCH₃; wherein R₁ is a H, R₂ is a H, R₃ is a C₁, R₄ is a H, R₅ is a H, and R₆ is a OCH₃; wherein R₁ is a H, R₂ is a H, R₃ is a F, R₄ is a H, R₅ is a H, and R₆ is a OCH₃; wherein R₁ is a H, R₂ is a H, R₃ is a CN, R₄ is a H, R₅ is a H, and R₆ is a H; wherein R₁ is a H, R₂ is a H, R₃ is a Br, R₄ is a H, R₅ is a H, and R₆ is a OCH₃; wherein R₁ is a OH, R₂ is a H, R₃ is a H, R₄ is a H, R₅ is a H, and R₆ is a OCH₃; wherein R1 is a H, R₂ is a H, R₃ is a COOCH₃, R₄ is a H, R₅ is a H, and R₆ is a H; wherein R₁ is a H, R₂ is a H, R₃ is a COOCH₃, R₄ is a H, R₅ is a H, and R₆ is a OCH₃; wherein R₁ is a H, R₂ is a H, R₃ is a COOCH₃, R₄ is a H, R₅ is a H, and R₆ is a CF₃; wherein R₁ is a H, R₂ is a H, R₃ is a Br, R₄ is a H, R₅ is a H, and R₆ is a C₆H₄—O—CH₂—C₆H₅; or wherein R₁ is a H, R₂ is a H, R₃ is a CH₃, R₄ is a H, R₅ is a H, and R₆ is a OCH₃.
 3. A compound of formula or pharmaceutical salts thereof:

wherein A and B are selected from C, N, S, O. R₁-R₇ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group. R₈ is a C₁-C₆ Alkyl group, a C₁-C₆ alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an ether group, an ester group, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group. R₉-R₁₃ are independently selected from a H, a C₁-C₆ Alkyl; a C₁-C₆ Alkenyl, a halo, a substituted C₁-C₆ alkyl, a substituted C₁-C₆ alkenyl, a carbonyl, a carbonate ester, an acetoxy group, a an acetyl group, an ether, an ester, an alkyl alkanoate group, an alkoxy group, a keto group, and an oxo group.
 4. The composition of claim 3, wherein C is a C; A and B are N; R1, R2, R5 and R6 are H; R7 is an O; and R8 is a —CO—.
 5. The composition of claim 3, wherein R9-R13 are H.
 6. A compound selected from (Z)-6,7-dimethyl-3-(2-oxo-2-phenylethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-7-chloro-3-(2-oxo-2-phenylethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-7-fluoro-3-(2-oxo-2-phenylethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-(2-(4-methoxyphenyl)-2-oxoethylidene)-6,7-dimethyl-3,4-dihydroquinoxalin-2(1H)-one; (Z)-6,7-dichloro-3-(2-(4-methoxyphenyl)-2-oxoethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-7-chloro-3-(2-(4-methoxyphenyl)-2-oxoethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-7-fluoro-3-(2-(4-methoxyphenyl)-2-oxoethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-oxo-2-(2-oxo-2-phenylethylidene)-1,2,3,4-tetrahydroquinoxaline-6-carbonitrile; (Z)-7-bromo-3-(2-(4-methoxyphenyl)-2-oxoethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-oxo-2-(2-oxo-2-phenylethylidene)-1,2,3,4-tetrahydroquinoxaline-6-carbonitrile; (Z)-7-bromo-3-(2-(4-methoxyphenyl)-2-oxoethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-5-hydroxy-3-(2-oxo-2-phenylethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-5-hydroxy-3-(2-(4-methoxyphenyl)-2-oxoethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-methyl3-oxo-2-(2-oxo-2-phenylethylidene)-1,2,3,4-tetrahydroquinoxaline-6-carboxylate; (Z)-methyl2-(2-(4-methoxyphenyl)-2-oxoethylidene)-3-oxo-1,2,3,4-tetrahydroquinoxaline-6-carboxylate; (Z)-methyl3-oxo-2-(2-oxo-2-(4-(trifluoromethyl)phenyl)ethylidene)-1,2,3,4-tetrahydroquinoxaline-6-carboxylate; (Z)-3-(2-(4-(benzyloxy)phenyl)-2-oxoethylidene)-7-bromo-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-(2-(4-methoxyphenyl)-2-oxoethylidene)-7-methyl-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-(2-(3,5-dibromo-4-hydroxyphenyl)-2-oxoethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-(2-(3,5-dibromo-4-hydroxyphenyl)-2-oxoethylidene)-7-nitro-3,4-dihydroquinoxalin-2(1H)-one; (Z)-6,8-dibromo-3-(2-(3,5-dibromo-4-hydroxyphenyl)-2-oxoethylidene)-7-hydroxy-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-(2-(3,5-dibromo-4-hydroxyphenyl)-2-oxoethylidene)-5-hydroxy-3,4-dihydroquinoxalin-2(1H)-one; (Z)-7-bromo-3-(2-(3,5-dibromo-4-hydroxyphenyl)-2-oxoethylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-(3,5-dibromo-4-hydroxybenzylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-(3,5-dibromo-4-hydroxybenzylidene)-7-methoxy-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-(3,5-dibromo-4-hydroxybenzylidene)-6,7-dimethyl-3,4-dihydroquinoxalin-2(1H)-one; (Z)-6,7-dichloro-3-(3,5-dibromo-4-hydroxybenzylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-7-chloro-3-(3,5-dibromo-4-hydroxybenzylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-(3,5-dibromo-4-hydroxybenzylidene)-7-fluoro-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-((1H-pyrrol-2-yl)methylene)-6,7-dimethyl-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-(3,5-dibromobenzylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-6-chloro-3-(3,5-dibromobenzylidene)-3,4-dihydroquinoxalin-2(1H)-one; (Z)-3-((1H-pyrrol-2-yl)methylene)-6-chloro-3,4-dihydroquinoxalin-2(1H)-one; (Z)-6-chloro-3-(furan-2-ylmethylene)-3,4-dihydroquinoxalin-2(1H)-one; and (Z)-7-bromo-3-(furan-2-ylmethylene)-3,4-dihydroquinoxalin-2(1H)-one.
 7. A compound of formula or pharmaceutical salts thereof:

wherein R₁-R₁₃ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group.
 8. The composition of claim 7, wherein R1, R2, R6 and R9-R13 are H.
 9. The composition of claim 7, wherein R1, R2, R5, R6 and R7-R16 are H.
 10. A compound of formula or pharmaceutical salts thereof:

wherein R₁-R₁₁ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group.
 11. The composition of claim 10, wherein R1, R2, R6 and R7-R11 are H.
 12. A compound of formula or pharmaceutical salts thereof:

wherein A, A′, B and B′ are selected from C, N, S, O. R₂-R₁₀ are independently selected from a H, a C₁-C₆ Alkyl group, a C₁-C₆ Alkenyl group, a halo group, a substituted C₁-C₆ alkyl group, a substituted C₁-C₆ alkenyl group, a carbonyl group, a carbonate ester group, an C₁-C₆ ether group, an C₁-C₆ ester group, an C₁-C₆ alkyl alkanoate group, an C₁-C₆ alkoxy group, a keto group, and an oxo group.
 13. The composition of claim 12, wherein A is an N and B, B′ and A′ are C; or wherein A is an O and B, B′ and A′ are C.
 14. A compound of formula or pharmaceutical salts thereof:

wherein R1 is a phenyl, benzyloxyl, pyridyl, indolone, pyrrol, carbamoyl, pyridine, substituted phenyl, substituted benzyloxyl, substituted pyridine, or substituted pyridyl and R3-R6 are individually a hydrogen, an anime or a halogen. 